About wet marks or wax marks under coating after paint spraying:
1. What are the wax marks under wet printing or coating: from the surface of the paint layer, the outline of the contaminated area on the bottom layer can be seen, or matt spots of various shapes appear.
2. Cause:
①The underlying surface is not thoroughly cleaned before painting, for example, grease or wax is not completely removed.
② The previous paint layer is not dried or the defects of the old paint layer are not removed.
③ The previous paint layer is incompatible with the re-sprayed paint layer.
3. Correction method:
If the wet print is more obvious, it should be sanded off the paint layer and re-sprayed.
